I found a whole lot of options by using Google 1965 - 1968 Mustang Rotisserie - for example:
https://www.redlinestands.com/catalog/shop-equipment-c-327/automotive-c-327_328/rotisseries-c-327_328_212/redline-automotive-auto-restoration-rotisserie-p-2721?msclkid=6de492d702471dc9c497cd70221d230a&utm_source=bing&utm_medium=cpc&utm_campaign=Bing%20Shopping&utm_term=4580221844818787&utm_content=Shopping